 <nz-select nzShowSearch
            [nzAllowClear]='allowClear'
            [nzPlaceHolder]="dictPlaceholder"
            [(ngModel)]="selectKey"
            (ngModelChange)='onSelectionChange()'
            [nzMode]="model">
     <nz-option *ngFor="let item of value" [nzLabel]="item.label" [nzValue]="item.value"></nz-option>
 </nz-select>
